Ultrasound Image Quality of the Brachial Plexus at the Interscalene Space Before and After Shoulder Arthroscopy
| Status: | Completed |
|---|---|
| Conditions: | Post-Surgical Pain |
| Therapuetic Areas: | Musculoskeletal |
| Healthy: | No |
| Age Range: | 18 - Any |
| Updated: | 2/1/2019 |
| Start Date: | June 18, 2018 |
| End Date: | November 30, 2018 |
Ultrasound Image Quality of the Brachial Plexus at the Interscalene Space Before and After Shoulder Arthroscopy: a Prospective Cohort Study
Ultrasound guided interscalene nerve blockade with local anesthesia is a standard regional
anesthetic technique for providing postoperative analgesia during shoulder arthroscopy and
wide variety of shoulder procedures. There is a paucity of data regarding the effects of
shoulder arthroscopy on ultrasound image quality, including the effects of muscle
mobilization and the use of large volume irrigation and subsequent tissue absorption, though
increased neck circumference and airway edema are known complications of arthroscopic
shoulder procedures.
The objective of the study is to determine if there is a difference in ultrasound image
quality of the interscalene block anatomy, by Likert scale, pre- versus post-operatively in a
cohort of patients undergoing shoulder arthroscopy who routinely receive blockade of the
brachial plexus for postoperative analgesia. Further, if there are differences in imaging
quality, correlations with surgical and patient factors will be studied.
anesthetic technique for providing postoperative analgesia during shoulder arthroscopy and
wide variety of shoulder procedures. There is a paucity of data regarding the effects of
shoulder arthroscopy on ultrasound image quality, including the effects of muscle
mobilization and the use of large volume irrigation and subsequent tissue absorption, though
increased neck circumference and airway edema are known complications of arthroscopic
shoulder procedures.
The objective of the study is to determine if there is a difference in ultrasound image
quality of the interscalene block anatomy, by Likert scale, pre- versus post-operatively in a
cohort of patients undergoing shoulder arthroscopy who routinely receive blockade of the
brachial plexus for postoperative analgesia. Further, if there are differences in imaging
quality, correlations with surgical and patient factors will be studied.
Inclusion Criteria:
- Subject is undergoing shoulder procedures involving arthroscopy
- Subject has consented to interscalene blockade for postoperative analgesia
Exclusion Criteria:
- Patient refusal
- Contraindications to interscalene blockade, including significant pulmonary
insufficiency, hemi-diaphragmatic paralysis, brachial plexus or degenerative
neuropathy
- Allergy to proposed local anesthetic medication\
- Severe cervical spine disease.
- BMI >40 kg/m2
- Neck Circumference > 50cm
- Failed preoperative interscalene blockade
- Patients known to be currently pregnant or actively breastfeeding
- Patients where English is a language barrier
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